“The key to Led Zeppelin’s longevity has always been change,” Jimmy Page proclaimed in 1975. This restless sprit enthralled some fans and infuriated others, specifically the type who preferred that the band remain on one sonic plane. Moving past the high-octane thunder of the gods found on their early albums, the folky Celtic mysticism of Led Zeppelin III and the megalithic rock of Led Zeppelin IV, 1973’s Houses of the Holy sounds very much like a band gleefully pondering limitless possibilities.

Click here to find out which Beatle was the inspiration for “The Rain Song”, the story behind the recording of “D’yer Mak’er” and how The Stones inspired the recording of the entire album.